I just bought a SGS3 on Verizon for my wife and for the first 3 weeks everything was fine but about 4 days ago we took the phone off charge in the morning and it was at 100%, within 2 hours the battery was at 21% with little to no use. I called the battery and reset the phone and fully charged it again and it was good for the remainder of the day. The following morning the same exact drain happened , phone got extremely hot as well. I called Verizon and they sent me a new battery and the problem actually went away for about 2 days. I got the new battery and charged it over night and the following day had the same exact problem. At this point the battery drains are completely random and I have tried all the recommendations online like turning off GPS and Bluetooth and brightness . Also , since this problem didn't start until about 3 weeks after my purchase Verizon will not replace my phone with a new one, apparently we should know within 14 days if our phones are defective. Any ideas ?